Feeding device for shaker conveyers



3 Shets-Sheet l Sept. 21, 1948. w. w. sLoANE FEEDING DEVICE FOR SHAKER GONVEYERS Filed Oct. 17, 1946 w. w. sLoANE FEEDING DEVICE FOR SHAKER CONVEYERS Sept. 21, 1948.

5 Sheets-Sheet 3 JUVE/vra@ Filed Oct. 17, 1946 Patented sept. 21, 194s FEEDING DEVICE FOR SHAKER c ooNvEYERs William W.` Sloane, Chicago, Ill., assignor to Goodman Manufacturing Company, Chicago, I Ill., a corporation of Illinois i I I `Application October `17, 1946,` Serial No. '703,816l

devices and is so arranged as to increase the efiec" tive feeding movement of the extensible trough `during each stroke of the conveyor, by causing the friction gripping means to more positively I move into disengagingpositions upon the strokes of the conveyor opposite from the strokes which serveftoextend or retract said extensible trough. An application Serial No. 670,490, led by me on May 17, 1946, nowPatent No. 2,434,12'7,\issued Jan. 6,1948, relates to a feeding device for a shaker conveyor, utilizing-holding cams to hold the feeding mechanism in position to extend or retract the extensible trough ofa shaker conveyor, and having stops associated withthe holding cams to more positively disengage the'gripping means from the extensible trough of the conveyoron its strokes opposite from its feeding `or retracting strokes. The device of my present invention, however, `difiiers from that of my prior application in that a single stopping means is `provided which is separate from the holding cams but'is connected therewith to `operate upon positioning of said holding cams in one `operative position or another. I vMy invention may be more clearly understood -as the following specification proceeds and with referenceto the accompanying drawings wherein: Figure 1 is a fragmentary plan view of the pickup endeof a 'shaker' conveyor trough linehaving a-feedingdevice constructed inaccordance with my invention associated therewith;

Figure 2 is an enlarged fragmentary vview in side `elevation of the deviceishown in Figure 1, with certain parts thereof shown in substantially longitudinal section; e

Figure 3 is an enlarged fragmentary transverse sectional view taken substantially along line 3-3 ofFigurel; I-

Figure 4 is an enlarged detail fragmentary longitudinal sectional view showing the `feeding mechanism in .position to extend theextensible trough of the conveyor; ,I f -Figure 5 is a fragmentary longitudinal sectional viewlsomewhat similar to Figure 4, `but 2 I showing the feeding mechanism in position to retractibly move the extensibletrough ofi the conveyor; i i Figure 6 is a fragmentary `horizonta-lsectional View taken throughthe feeding device; and

Figure 7 is an enlarged exploded fragmentary isometric view showing the cams for operating the feeding device and the stoppingl means for positively disengagingthe grip blocks from the extensible trough upon ltheir i strokes opposite from their feeding strokes.` c I Inl the drawings, a reciprocating `trough `II) of Ta shaker conveyor is shown aslliavingan` extensible trough `II nested therein and mounted for extensible and retractible movement with respect thereto.` `Said reciprocating trough may be connected to and extendwforwardlytfrom a swivel (not shown) of a. shaker conveyor trough'` line,

for continuously conveying material `from said reciprocating trough to the trough line when: said reciprocating `and extensibletroughs are at various angles with respect to the `trough line, and 'may be reciprocably driven from saidl troughuline through said swivel ina well known manner not herein shown ordescribed. I The reciprocating trough I0 is slidably supported adjacent its `forward end on bearing plates I2, I2 extending along and projecting laterally from the upper flanges of said extensible trough on bearing blocks I3, I3. Said bearing-plates I2, I2 extend between said bearing blocks I3,A I3, 4and said bearing blocks are Vpivotally mounted on the inside` of vertical `side wallseIIl, I4 of-a frame I5 projecting forwardly from andextendand ing across the bottom of andupwardly `along op-` posite sidestof said `reciprocating trough. Said extensible trough has a gathering shovel AI6 on its forward end andis slidably supported on the `ground on the forward end of said shovel,` and may be supported above `the ground at its? rear end on a supporting shoe (not shown), in amanner well known to thoseskilled in the art.

The means for extensibly or retractably moving the extensible trough relative to the reciprocating trough is` similar to that shown in my prior Patent No.,2,318,808` and includes two pairs of friction grip blocks25, 25 adapted to `.engage the upper andlower sides of the bearing plates I2, I2?. Each pair of said gripblocks is pivotally mounted ina carrier member l2li. Two laterally spaced? `connecting frames 21, 21 project forwardly fromand` are transversely pivoted to thelower forward end of the frame member I5 on transverseshaftszZ, 28 mounted at their endsin laterally spacedside walls 29 and 30y projecting upwardlyfromsaid for each side of said extensible trough, so a de-I scription thereof for one side of said yextensible trough will suce for both sides of said trough.

A yiel-dable link 33 connects the lower end of each carrier member 26 with `the connecting frame 27. Said link includes a rod 34 secured to Ia for-` ward upright end wall 35 of a yoke 36 at one of its f' Y ends and slidably mounted in .a pivotal pin 3l at its.

opposite end. Said pivotal pin 31 is transversely pivoted to the lower end of said carrier member. A compression spring 3e fen-circles said rod and is 4interposed between the forward side` of said end wall `35 and a flanged sleeve 40, slidably mounted on said rod and abutting said pivotal pin (see Figaresv 2, and 6). .Said compression spring is of such strength that said yield-able link willnormally be a solid member, but will yield upon the engagement. .of an obstruction by the shovel I6 upon the forward strokes of the conveyor, to disengage the grip blocks 25, 254from the bearing 4pla-te I2 and prevent buckling of the trough line.

The yoke 36 is mount-ed between the side walls 29 and 36offthe1connecting frame 2.1 .on the lower 'ends` oftwo :longitudinally spaced rocking links 43 and 4;4 (see Figure 2*). Said links are pivotally 'mounted between said side walls on parallel longiindinallyY spaced transverse shafts 45 and 46, respectively, mounted .at their ends in said side walls.;

v I'he yoke.y 36.v is vprovided with a-depending lower shouldered. portion 4lv which` a-dapted to engage an engaging face 49' of astopping member .50..` pivotally mountedadjacent its opposite ends Ainthe sidewalls 29rand 36 ofthe connecting frame .211,l for movement, with respect thereto about a transverse axis. When said shouldered portion 45s-of said'yoke is held int position to. eng-age said engaging face 49, as will; hereinafter more clearly appearJ as this specification.proceeds., the yieldable link 33 will exert-a forward thru-sting action on the lower end ofthe carrier member 2 lduring the forward strokes of the conv-eyor. Upon the return :strokes ofthe conveyor said-engaging face 49 of .said stoppingimember ll=will engage the shouldered portion 4l of Vsaid yoke form` a. reaction vmember for.- the link 33, and4 positively move said link with said connecting frame. This in turn will .positivelyy pivot said-carrier member ab out'the pivotal pin 3ft-in a direction to release the grip blocks 25.,` 25' from said bearing plate I2..` Clearance is provided; vbetween said engaging face and said vshouldered portion during the forward strokes of @the conveyor -t-o permit said stopping member tobe :readily moved into an engaging or disengaged position'-,Av .w v l The upper end of the carrier member26 is connectedfl with the connecting frame 21. by means of a link 54:..pivotally connected' between thev turca- -tions of. a rearwardly and upwardly projecting bi- .furcated ear 5535er said carrier member. The end of rsaid link opposite fr-om saidcar-rier member is pivot-ally connected to. the upper end' of a rocking member 515. VSaid rocking member is lpivotally mounted on the transverse shaft 46 and' has a bifurcated arm'i Adepend-ing therefrom, which h-a's a. forwardly facing abutment `surface 58 at the lower end of each of its furcations. Said abutment surfaces are adapted to eng-age a rearwardly facing engaging face 59 of the stopping member Eil. The angle .of said engaging face 59 with respect to the .engaging face 49 is such that when said face 59 is in position to engage said abutment surfaces 58, v58,-said engagingface 4'9 will be out of position to be engaged by the shouldered portion 4l of the yoke 36, and will permit said yoke to move relatively freely with respect to the connecting frame 2lA about the links 43 and 44. Clearance is provided between said engaging face and the abutment surfaces 58, 58, to permit ready movement of said stopping member int-o its several operative positions. When said ldepen-ding arm and abutment surfaces 58, 58 are held in positi-on to. be engaged by said engaging face 59, as will hereinafter more clearly appear as this specification proceeds, said link 54 will exert a pulling force on the upper end of said carrier member during the return strokes of the conveyor. Upon the forward strokes of the conveyor said engaging face 59 will engage said abutment surfaces and exert a pushing force on the upper end of said carrier member, to positively release said grip blocks from `said bearing 'plat-e.

. A compressi-on spring. l1 isprovided to yieldably hold the rocking member 56. and yoke 36 in position to hold the carrier member 26 in the proper posi-tion of inclination with respect Yto `the bearing plate I2, so thegrip blocks 25, 25 will be inY positionto engage said bearing plate .l2 at the` 'beginning of the forward or return ystrokes of the conveyor, depending upon whether it is desired to extend or retract theeX-tensible trough I'I. Said spring is interposed between an arm 18 extending angularly inwardly and downwardly from .the link 43 and an, arm I9 extending 4anpularly upwardly and forwardlyfrom the rocking member 5.6, and is not strong enough to cause any gripping `action of the grip block-s 25, 25, but merely Serves to-yieldably hofldthe carrier member in position so .sai-d.' grip` blocks may engage the bearing plate t2v at the beginning of the feeding strokes ofthe conveyor.

`Two cams Ilill and 6l are provided to selectively hold either or both ofthe links 33 and 54 for movement with the connecting frame 2.1 during reciprocationof the conveyor Ito cause extensible or retra=ctible movement of said extensible trough,

or to cau-se .reciproc-able movement of said extensible. trough with said reciprocating trough. Said cams are herein shown as being formed integrally with a common sleeve 62, freely mounted on a transverse shaft 63 journaled in opposite .upright sidewalls 5l, 5l of the connecting frame 21'(seeFlgLiresGan-d't). .l i

The cam 66 is :adapted to engage arollerl mounted vbetween the sides of the yoke 36 adjacent its rear end on'. apivotal pin 65,1;0 move and hold said" yoke in position to be'engaged by the :engaging face 49vofthe stopping member Ell-upon the returnstrokes 4of the conveyor.

The cam` 62| is adapted to engage a roller-G mounted between the furcations of the depending arm 51 of the rocking member 56 on a pivotal p-in 611, to move .an-d' hold the abutment surfaces 5-8, 58 of said arm into position to be engaged by the engaging face 59 of the stopping member 50 upon the forward strokes of the conveyor.`

The cams 66 and 6|: are moved into engaging or disengaged positions by a hand lever 69 keyed on the outer end of the transverse shaft 63.V A yeldable operatingv connection indicated generally by reference vcharacter 'H1-is provided-'between said shaft and ,the` s1eeve62, to operate said cams from` said shaft and relieve said hand described in my Patent No. 2,318,808vandis no Ypart of my present invention so need not herein be described in detail. i

The angular positions of the cams 60 and 6l Ywith respect tothe sleeve 62 are such that Iwhen the hand lever 69 is in the upright position shown in Figure 2, both of said cams will engage their .respective rollers to cause the links 33 and 54 to `reciprocably `move with the connecting frame `21 during the forward and return strokes ofthe conveyor `and reciprocably move the extensible .trough I l Iwith the reciprocating trough Ill.

When said hand lever is in the forwardly inclined `position shown 1in Figure `4, the cam 6l! will be .moved into engagement `with the roller 6,4and `the cam 6l will :be moved out of` engagement with the roller 66 and forces will be exerted on the `yieldable link 33 to engage the grip blocks 25, 25

with the bearing plate `l2 during the forward strokes ofthe conveyor and to disengage said grip blocks from said extensible trough during the return strokes `of `the conveyor, to extensibly move said extensible trough with respect to said reciprocating trough.

f When said hand lever is inthe rearwardly inclined position shown in Figure 5, the cam` 6| `will be moved into engagement with the roller `66` and the cam 60 will be moved out of engagement with the roller 64 and forces will be exerted on the rocking arm 56 and link 54, to engage the grip blocks with the extensible trough during the return strokes of the conveyor and to release said grip blocks from said extensible trough during the forward strokes of the conveyor, to retractibly move said extensible trough with respect to said reciprocating trough. c The shafts 63, 63 on opposite sides of the feeding mechanism are connected to operate together by means of flexible couplings 1|, 1l connected together by means of a transverse shaft 13.

mThe connection between the hand lever 69 and `the stoppingmember 50, for moving said lstopc projecting upwardly from the outer end of a shaft 84 formed integrally with and projecting outwardly from said stopping member.` Upon movement of said hand lever into position to engage the cam 6D with the roller 64 on the `yoke 36, the engaging face 49 of the stop 50 will be moved into position to engage the shouldered portion 41 of said yoke upon the return strokes of the conveyor. This will positively move said 'yoke withthe connecting frame 21 and break the gripping connection between the grip blocks 25, 25 and the bearing plate I2. At the same time,

the engaging face 59 of said stopping member 50 will be moved out of engagement with the depending arm 51 of the rocking member 56, to

permit relatively free movement of said rock- "ing `member about the axis )of theshaft 46, so

, l to the inner `ends of said shafts, and connected the yieldable link `33 can more readily move the carrier member `26 into. position .to` engagethe `grip `blocks 25 with the bearing plate `|2during the forward strokes of the conveyor and in a direction to` positively disengage `said grip` blocks from said` bearing plate during the return `strokesl ofthe conveyor, and effect forward engaging face 49 of the stopping member 5l!` will be disengaged from the yoke 36 and the engaging face 59 of said stopping member will be` moved `in position to engage the depending arm 51 of the rocking member 56. This will cause positive movement of said rocking member and link 54 with the connecting frame 21 during` the forward and return strokes of the conveyor, and willpermit relatively free movement of the yieldable link 33 with respect to said connecting frame 21 about the links 43 and 44 during `both the-,forward and return strokes of the conveyor, to positively break the gripping connection betweenthe grip blocks 25, 25 andthe bearing plate` l2,at the beginning of the forward strokes. of the conveyor and assure gripping of said grip blocks withfsaid bearing plate for substantially the `ful1;lengths of the return strokes of the conveyor, andthe release` of `said grip blocks from `said bearing plates` for substantially the` fulllengths-of` the forward strokes of the conveyor, toretractibly move` the extensible trough Il for substantially Athe full length of each` return` stroke ofthe It may be l seen from lthe foregoing. ithat `a `novel form of stopping means for the` links 33 blocks during alternate strokes` of the conveyor,

for substantially the full lengths ofthe strokes thereof, `when extensibly or retractibly moving said extensible trough with respect to said reciprocatingtrough.. l

While `I 4have `herein shown and described one form in which my invention `may be embodied, it

will be understood that the construction thereof and the arrangement f of .the various `parts may be altered without departing from the splritand scope` thereof. Furthermore, I do Snot Wish to be construed as limiting my invention to the specic embodiment'illustrated, excepting as it may be limited in the appended claims. c l

I claim as my invention:

1.A In a feeding mechanism for shaker conveyors and in combination with an extensible trough having a shovel on its forward end, a reciprocatingltrough, a connecting frame transversely pivoted to said reciprocating trough, a carrier member, frictiongripping means carried by said carrier member for engagement with said extensible `trough during alternate strokes of the conveyor,

`a linkpivotally,connecting-one end of said carrier acides-e member with .said connecting frame, another link Lpivotally connecting theopposite lend vof .said carrier #member l`with 'said .connecting frame, two spaced holding cams, each' .of said foams .being :selectively operable to 'hold ione of said links `for positive movement with the conveyor during allter-nate strokes -of the conveyor and `cause said link `to exert ia iforce on said carrier member to engage said grip blocks with said extensible trough during alternate strokesof the conveyor, -and-.astopping means for each of said links, oper- :able .upon the vstrokes Aof 'the conveyor .opposite 'from' the kextend-ing .or retracting strokes lthereof to positively disengage said gripping means from said extensible trough', said stopping ymeans being "selectively movable into -position to serve -as a .stopfor the link positively moved by .one lof said 4respective cams and to permit :relatively free movementof said other lin-k.

:2. 1n a feeding mechanism `for shaker conveyiors and 'in combination with an extensible trough having a shovel on its forward end, 'a reciprocat- 4ing trough, a connecting frame transversely -pivyote'd ito said reciprocating trough, a carrier member, friction gripping .means carried by said car- `.rier member :for engagement with said extensible :trough during l:alternate `strokes of the conveyor, :to extensibly or retractibly move said extensible trough with' respect` to said reciprocating trough, :a 'llink pivotally connecting one end of said carrier member with said connecting frame, another `rlink pivot-.ally connecting theopposite end of said ,carrier member with ysaid connecting frame, two Vspaced-holding cams, each of said vcams being selectively operable fto cause one of said links to positively `-move with the conveyor during alternate strokes of the conveyor and cause said link 'to exert a force on said lcarrier member to lengage said grip lblocks with said extensible trough `during alternate strokes-of .the conveyor, and a stopping means for said links, operable upon the .strokes of the Vconveyor opposite from the strokes Athat said holding cams `move said respective links `with 4the conveyor, said stopping means being movable into `position -to serve as ia -stop for the 2link positively moved by one of said Arespective Jcams tor positively release `said gripping means uponthe strokes of the -conveyor opposite from lits feedingstrokes, and to permit relatively free .movement of said `other link, including a mem- '.ber pivotally mounted on said frame `and having pne engaging face adapted-to serve as a stop `for 'oneflink :and another engaging face disposed at an angle to said ilrst mentioned engaging 'face land 7'adapted to vserve asa stopffor said -other Ilink, land tmovable into .position to .disengage one of 'said engaging faces when said other engaging face :is moving `into an engaging position.

.3. In a feeding mechanism for shaker :convey- :ors `and in combination with anextensible trough .having afshovel :on its 'forward end, ,a reciprocat- .ing trough, 1a connecting frame transversely pivoted to said reciprocating trough, fa carrier .member, friction gripping means carried by .said carrier member for engagement with said extensible trough, ,during alternate strokes of :the conveyor, `to l,extensibly tor retractibly move said extensible .trough with respect v to said reciprocating. trough, alink pivotally Connectingoneend f .said :carrier member with said connectingtrame, :another link Apivot-ally connecting the opposite Aend of :said carrier :member with said connecting frame, two :spaced .holding cams, each .of .said cams being op- ,.erable to cause one -of .said :links to-positively move the conveyor, Aand .cause Lsaid link to ,exert a force Aon said ycarrier member to engage said-grip vblocks `with said extensible trough during Falternate `strokeso'f the Vconveyor, to extensibly or -retractibly move said extensible trough With respect to the conveyor, -a member transversely pivoted yto said `frame land having one engaging fface adapted lto `serve as a stop for one link and -positively release s-aid gripping means upon 'the strokes of the conveyor oppositefrom lits vfeeding strokes, and another engaging face disposed at van :angle to said i'lrst mentioned engaging sface and adapted 'to serve as a stop for said other link, and so arranged that as one -of said engaging faces moves to an engaged position, the other of said engaging 'faces will move to a disengaged position yand permit' relatively free movement' of its associated link with respect to said connecting frame, a handlever vfor moving said'cams Vinto position to cause either one of said links to positively move with said reciprocating trough, and 'an operative connection between said hand lever and said stop to pivotally move said stopinto Yone operative position or another, upon movement of said Acams into -one oper-ative position or another.

4. In a feeding mechanism for shaker -conveyors, a reciprocating trough, an extensible trough, a connecting frame extending `inadvance of vand transversely pivoted to said reciprocating troughfa carrier member, -friction gripping means carried by said carrier member and adapted to engage Vsaid extensible trough during alternate strokes of the conveyor, a link connecting the lower end of said carrier member with said connesting frame, another link kpivotally connected to the upper end of said carrier member, azroc'king member 'transversely pivoted'to said connecting frame, land having pivotal connection with said other link, and means selectively operable lto hold either of said 'links tor movement with said connecting frame in vthe directions of reciproca- -tion of the conveyor including two spacedholding cams transversely pivoted to said frame and selectively operable to engage either said rocking member or said yieldable link, or to simultaneously engage both said rocking member and Ysaid yieldable link, to engage said gripping meansiwith said extensible trough during alternate strokes `of Athe conveyor, and a stopping means on said kframe separate from said holding cams land movable into position to serve as a stop forthe'llink which acts as a 'feeding member, and acting infa direction opposite from the respective cam engaging said link to positively release said gripping means upon the strokes of the .conveyor opposite fromits feeding strokes, and permitting relatively free movement of said other link with respectto said connecting frame. f

5. In a feeding mechanism for shaker` .conveyors, a reciprocating trough, an extensible trough, a connecting frame extending in .advance Aof land transversely pivoted to said reciprocating trough, a 'carrier member, friction gripping ,means carried I'by said carrier member and adapted 'to engage said extensible trough during alternate strokes of the conveyor, a link connecting the lower lend of said carrier member with said connecting frame, another link pivotally `connected to the upper end of said carrier membeigfa rocking mem-ber 1transversely pivoted to said connecting frame, and having pivotal connection with said other link, and means selectively .operable to hold either of said links for movement with said 'connecting frame in thedirections of reciprocatlon-of the conveyor yincluding two spaced holding `cams transversely pivotedto said frame on one side of said rocking member, and a stopping member transversely pivoted to said frame on the opposite of said rocking member from said holding earns, said stopping member having one engaging face adapted to serve as a stop for said one link, to canse said link to positively release said friction gripping means upon the return strokes of the conveyor, and having another engaging face disposed at an angle to said iirst mentioned engaging face and adapted to serve as a stop for said other link to positively release said friction gripping means upon the forward strokes of the conveyor upon movement of respective of said holding cams into position to cause retraction of said extensible trough, each of said stops moving out or a stopping position upon movement of the cam associated therewith to an inoperative position, to permit relatively free movement of the link which is not exerting a feeding force on said carrierl member during both the forward and return strokes of the conveyor.

6. In a feeding mechanism for shaker conveyors, a reciprocating trough, an extensible trough, a connecting frame extending in advance of and transversely pivoted to said reciprocating trough, a carrier member, friction gripping means carried by said carrier member and adapted to engage said extensible trough during alternate strokes .of the conveyor, alink movably connecting the lower end of said carrier member with said connecting frame, another link pivotally connected to the Lipper end of said carrier member, a rocking member transversely pivoted to said connecting frame, .and having pivotal connection with said other link, and means selectively operable to hold either or both of said links from movement with respect to said connecting frame in the directions of reciprocation of the conveyor to cause either of said links to engage said grip blocks with said extensible trough including two spaced holding cams transversely pivoted to said frame on one side of the axis of 1ockingmove ment of said rocking member, a hand lever for selectively moving said cams into position to hold either of said links for movement with said connecting frame, a stopping member` transversely pivoted to said frame forwardly of the pivotal axis of said rocking member, said stopping member having one engaging face adapted to be engaged by said rocking member and serve as a stop for said link connected thereto during the forward strokes of the conveyor, upon engagement of an associated cam with said rocking member, to positively `release said friction gripping means upon the forward strokes of the conveyor, and having ano-ther engaging face disposed at an angle to said iirst mentioned engaging face and adapted to serve as a stop for said rst mentioned link upon the holding of said link from movement lwith respect to said connecting frame by the other of said cams, to positively release said gripping means upon the return strokes of the conveyor, said stops moving to a disengaged position upon movement of the cams associated therewith to disengaged positions, to permit relatively free movement of the link which is not exerting a feeding force on said carrier member, during both the for-ward or return strokes of the conveyor, and an operative connection between said hand lever and said stopping member for pivotally moving said stopping member into one operative position or another upon movement of either of said cams to an operative position.

WILLIAM W. SLOANE. 

